brooks



(No Model.) 3 Sheets-Sheet I.

G. O. BROOKS.

LOG SETTING APPARATUS FOR SAW MILLS.

N0. 261,804. Patented July 25, 1882.

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(No Model) I 3 Sheets-Shet '2 G. C. BROOKS.

LOG SETTING APPARATUS FOR SAW MILLS. No. 261,804. Patented July 25, 18 82.

3 Sheets-Sheet 3.

I (No Model.)

0. c. BROOKS. LOG SETTING APPARATUS FOR SAW MILLS.

M Patented July 25-, 1882.

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UNITED STATES PATENT OFFICE.

GHAPIN o. BROOKS, or LANCASTER, New HAMPSHIRE.

LOG-SETTING APPARATUS FOR SAW-MILLS.

SPECIFICATION forming part of Letters Patent No. 261,804, dated July 25, 1882.

Application filed April 17, 1882.

To all whom it may concern Be it known that I, GHAPIN G. BROOKS, of Lancaster, in the county of Coos and State of New Hampshire, have invented a new and Improved Log-Setting Apparatus for Saw-Mills, of which the following is afull, clear, and exact description.

The invention consists essentially of ashaft running lengthwise along and mounted on the saddle, with a spirally-grooved drum on nearit,

'each end of the saddle, over each of which drums a chain is coiled, so as to work in the grooves, with the ends extended to the two sides of the carriage, respectively, and attached by adjusting-screws to set them taut, and alike for drawing the saddle forward and backward on the head-blocks of the carriage, according as the shaft is turned one way or the other, by means of a hand-lever and a toothed setting-wheel and pawl, said wheel being located on the shaft together with the lever, and with a setting-dog and indicator to gage the setting by, all as hereinafter described. Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure lis a plan view of the log-carriage, head-blocks, saddle, and the improved setting and dogging apparatus. Fig.2 is a transverse section of Fig. 1 on line as at. Fig. 3 is a section through the saddle and setting apparatus online y y, Fig. 1. Fig. at is a section on line 2 z of Fig. 3. Fig. 5 is a side elevation of the apparatus for securing the log and settingit to adjust it for the taper, the beams of the saddle being shown in crosssection. Fig. 6 is a front elevation of Fig. 5. t

A represents the longitudinal timbers of the carriage; B, the longitudinal timbers of the saddle; (J, the head-blocks upon the carriage, and whereon the saddle slides forward to push the logs up to the saw by the knees 0, Figs. 1 and 2, and knee-blocks d Figs. 1, 5, and 6.

F represents the shaft, located in boxes on the cross-bars L, and whereon the spirallygrooved drums D are mounted for working the saddle by chains E, coiled upon and attached to said drum at J, Fig. 2, and also attached to the carriage, being extended to both sides, as shown, and connected to brackets H by ad- (No model justing-screws t, which adjust and tighten the chains, so that the saddle may be always adjusted exactly parallel with the saw, and so that there will be no slack and backlash, as in most setting devices.

The chains E are inclined from the drums D to the connecting-brackets H to coincide with the inclination of the grooves of the drums at the points where they run on and off the drums to avoid angles thereat, and thus insure the best action.

It will be seen that by the drums moving along the chains forward and backward the grooves of the drums and the chains always coincide in the pitch or inclination, thus insuring uniform tension of the chains, also uniform travel of the saddle.

To turn the shaft for working the saddle a lever, N, is attached to a hub, M, fitted loosely to the shaft alongside of the notched wheel V and provided with the double-headed dog d, pivoted at d to said lever, and connected at the end of its arm n with the spring-arm e of a lever, f pivoted to lever N at 0 and having a knob-handle at g for shifting said lever f forward and backward in guard h to reverse the dog d The spring portion (2 of said dog-reversing leverf is to allow the dog to rise out of and shift back in the teeth of wheel V when lever N is operated to move the saddle of the log-carriage. The dog 01 is to be reversed, as above described, according as the saddle is to beshifted ward.

A notched gage-wheel, V, is attached to the shaft F on the side of lever N opposite to the wheel V with a stop-latch, q, and a foot-piece, P, arranged on the pivot S in connection with said gage-wheel, to be used to gage and stop forward or backcator-wheel, T, is also attached alongside of the stop-wheel with a scale by which to show how much to set the saddle for the desired thickness of the boards.

The spring X throws the stop-pawl q outof the stop-wheel V, leaving the said wheel V free to be turned until the stop is brought down by the foot of the operator.

For securing and holding the log while sawing, and also for setting out the taper end of the log, the two sets of reversely pointing and adjusting setting-dogs b are mounted on the upright knee-block d of a substantial supporting-plate,,A, by the bars a, to side up and down thereon, also to swing on the parallel connecting-bars 0 the said dogs being arranged on the bars a in the ways V, between the guides at and the sides of the said upright knee-block (1 the guides d being bolted at d to said knee-block 61 The bars-ct are pivoted to the aforesaid bars 0 and said bars are pivoted to the plate A at X, whereon they swing to swing the dogs. 7

' The front dog-bar, a, in Fig.5, is connected by rod 0 and lug 7a with leverf at one side of its pivotf in the top of the knee-block (1 and the opposite bar a is similarly connected by another rod 6 and lug It to leverf at the opposite side of the pivot), so that when said leveris raised in t 0 the position represented by the dotted lines, Fig. 6, front bars, 0 will swing down into the position indicated by dotted lines g, Fig. 5, and the corresponding bar 0 of the other bar a will be raised up to the position indicated by dotted lines 9 thereby drawing the dogs back within ways V to allow the log to be shifted. The catch S then engages with toe S on the knee-block d to hold them in that position until the log is ready for being secured by the dogs. The barf is then thrust down to project the dogs and engage them with the log. The lugs k swing in the notches d of the guides d when the dogs are so operated, said notches being shown by dotted lines 01 for both bars d, as the front bar is broken out in the drawings. The plate A, to which the bars a are connected, is fixed by slotted ways J to slide on guides h, dotted, Fig. 5, and secured by bolts i to the standards H, mounted on the saddle B, so as to slide forward and backward to set the dogs forward and backward, and an operating-lever, M, is connected to the plate A by pivot p, and coupled to one of the standards- H by the link Z for shifting the plate, and said lever is provided with a latch, 'n, and rack L for setting it.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is- Y The combination, with the carriage A, sad.- dle B, shaft F, spirally-grooved drums D, and chains E, of the angle-plates H, secured to the carriage A diagonally across from each other in lines tangent to the average position of the spiral groove where it receives their respective chains, as shown and described.

OHAPIN C. BROOKS.

Witnesses:

JARED T. WILLIAMs, GEORGE I. HAYES. 

